The film begins circa 2008 (opening against the backdrop of news of the Islamabad Marriott Hotel bombing) with an elderly Lady Thatcher buying milk unrecognized by other customers and walking back from the shop alone. Over the course of three days we see her struggle with dementia and with the lack of power that comes with old age, while looking back on defining moments of her personal and professional life, on which she reminisces with her (now-dead) husband, Denis Thatcher, whose death she is unable to fully accept

Aurélien and Argine have never been able to leave each other. Brother and sister, they have always lived together. Aurélien secretly makes ends meet for them by dealing in stolen metal. One night, his accomplice Simon suddenly arrives.